Ardha Namaskar Parsvakonasana

Ardha namaskar parsvakonasana is an
intermediate twisting asana that calms the mind and reduces stress.
The name comes from the Sanskrit, ardha, meaning “half”; namaskar,
which is another term for namaste, meaning “bow to you”; parsva,
meaning “side” or “flank”; kona, meaning “angle”; and
asana, meaning “posture” or “pose.”

Start in lower lunge position, dropping
the back knee to the ground. Bring your palms together in prayer
position at your heart center with the elbows pointing outward. On an
exhalation, twist toward the lead leg, placing the opposite upper arm
on the thigh while holding prayer position. Gently twist the chest
toward the sky and keep your gaze straight ahead or upward toward the
sky.

Ardha namaskar parsvakonasana may also be referred to in English as half prayer twist.

Yogapedia explains Ardha Namaskar Parsvakonasana

Traditionally, ardha namaskar
parsvakonasana is believed to activate the manipura chakra, which is
the body's energy and vitality center, providing confidence, internal
strength and courage. Activating the manipura chakra is also thought to
dispel fear and insecurity.

Additionally, this asana provides the following benefits:

Increases stamina

Improves concentration

Lengthens, realigns and
strengthens the spine

Tones the back, legs, hips and
arms

Improves balance and coordination

Yogis with neck pain should keep the gaze forward or down to
avoid twisting the neck. For the full version of the pose, or
namaskar parsvakonasana, the back knee lifts off the ground as the
leg straightens.